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--- products:sbc:vim-5:add-ons:vim4-mipi-camera [2026/09/15 02:13]
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-~~tag> VIM4 OpenCV V4l2 MIPI ISP ~~
-{{indexmenu_n>50}}
-====== VIM4 MIPI Camera Usage ======
-===== Linux =====
-==== Upgrade System ====
-Please follow the [[products:sbc:vim4:configurations:upgrade-system|documentation ]]to upgrade your system to latest version.
-==== Video Node ====
-The video node for MIPI camera is ''/dev/video50''.
-==== Record Video via Gstreamer ====
-Follow the steps below to install Gstreamer Encoder Plugin:
-```shell
-sudo apt update
-sudo apt install gstreamer-aml
-```
-Record Video:
-```shell
-gst-launch-1.0 -e v4l2src device=/dev/video50 io-mode=mmap num-buffers=300 ! video/x-raw,format=NV21,width=3840,height=2160,framerate=30/1 ! amlvenc bitrate=8000 ! h264parse ! qtmux ! filesink location=test_50.mp4
-```
-==== Record Video with OpenCV ====
-Follow the steps below to install OpenCV:
-```shell
-sudo apt update
-sudo apt install libopencv-dev python3-opencv
-```
-Get Frame via V4l2:
-```c++ mipi-camera.cpp
-#include <opencv2/highgui/highgui.hpp>
-#include <opencv2/imgproc/imgproc.hpp>
-#include <opencv2/core/core.hpp>
-#include <iostream>
-#include <string>
-using
-namespace  cv;
-using
-namespace  std;
-int main(int argc, char** argv)
-{
-    int count=100;
-    string str = argv[1];
-    string res=str.substr(10);
-    VideoCapture capture(stoi(res), CAP_V4L2);
-    capture.set(CAP_PROP_FOURCC, VideoWriter::fourcc('U','Y','V','Y'));
-    capture.set(CAP_PROP_FRAME_WIDTH, 3840);
-    capture.set(CAP_PROP_FRAME_HEIGHT, 2160);
-    while (count)
-    {
-        Mat frame;
-        capture >> frame;
-        if (frame.empty()) {
-            break;
-        }
-        int h = frame.rows;
-        int w = frame.cols;
-        const char *name = "video";
-        namedWindow(name, 0);
-        imshow(name, frame);
-        waitKey(30);
-        count--;
-    }
-    return 0;
-}
-```
-Get Frame via Gstreamer:
-```c++ mipi-camera.cpp
-#include <opencv2/highgui/highgui.hpp>
-#include <opencv2/imgproc/imgproc.hpp>
-#include <opencv2/core/core.hpp>
-#include <iostream>
-#include <string>
-using
-namespace  cv;
-using
-namespace  std;
-int main(int argc, char** argv)
-{
-    int count=100;
-    string str = argv[1];
-    string gstformat = "NV12";
-    string gstfile = "v4l2src device=" + str + " ! video/x-raw,format=" + gstformat + ",width=3840,height=2160,framerate=30/1 ! videoconvert ! appsink";
-    VideoCapture capture(gstfile);
-    while (count)
-    {
-        Mat frame;
-        capture >> frame;
-        if (frame.empty()) {
-            break;
-        }
-        int h = frame.rows;
-        int w = frame.cols;
-        const char *name = "video";
-        namedWindow(name, 0);
-        imshow(name, frame);
-        waitKey(30);
-        count--;
-    }
-    return 0;
-}
-```
-Compile:
-```shell
-gcc -o mipi mipi-camera.cpp -lopencv_imgproc -lopencv_core -lopencv_videoio -lopencv_imgcodecs -lopencv_highgui -std=c++11 -std=gnu++11 -Wall -std=c++11 -lstdc++ -I/usr/include/opencv4
-```
-Test:
-```shell
-./mipi /dev/video50
-```
-==== Preview video on ubuntu desktop ====
-<tabbox Ubuntu 24.04>
-You can use gstreamer ''waylandsink'' to preview the video on Ubuntu Wayland desktop:
-```shell
-gst-launch-1.0 v4l2src device=/dev/video50 io-mode=mmap  ! video/x-raw,format=NV12,width=3840,height=2160,framerate=30/1 ! videoconvert ! waylandsink
-```
-You can use the command below to check display fps:
-```shell
-gst-launch-1.0 -v v4l2src device=/dev/video50 io-mode=mmap ! video/x-raw,format=NV12,width=3840,height=2160,framerate=30/1 ! fpsdisplaysink video-sink=waylandsink sync=false text-overlay=false
-```
-<tabbox Ubuntu 22.04>
-You can use gstreamer ''clutterautovideosink'' to preview the video on Ubuntu Wayland desktop:
-```shell
-gst-launch-1.0 v4l2src device=/dev/video50 io-mode=mmap ! video/x-raw,format=NV12,width=3840,height=2160,framerate=30/1 ! clutterautovideosink
-```
-You can use the command below to check display fps:
-```shell
-gst-launch-1.0 -v v4l2src device=/dev/video50 io-mode=mmap ! video/x-raw,format=NV12,width=3840,height=2160,framerate=30/1 ! fpsdisplaysink video-sink=clutterautovideosink sync=false text-overlay=true
-```
-You press ''Alt + F7'' and then move mouse to move the windown.
-</tabbox>
-===== Android =====
-WIP:

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